000 00310 a2200121 4500
080 _a575.113:576.1
_bD 252 G
245 1 _aGene activity in early development
_cby E.H. Davidson
260 _aNew York
_bAcademic Press
_c1968
650 _aGene
100 1 _aDavidson, E.H.
_d
300 _a375 p.
901 _a108357
999 _c32507
_d32507